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<div class="title">src/ca/uqac/dim/turtledb/XmlQueryVisitor.java</div>  </div>
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<a href="_xml_query_visitor_8java.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*-------------------------------------------------------------------------</span>
<a name="l00002"></a>00002 <span class="comment">    Simple distributed database engine</span>
<a name="l00003"></a>00003 <span class="comment">    Copyright (C) 2012  Sylvain Hallé</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment">    This program is free software: you can redistribute it and/or modify</span>
<a name="l00006"></a>00006 <span class="comment">    it under the terms of the GNU General Public License as published by</span>
<a name="l00007"></a>00007 <span class="comment">    the Free Software Foundation, either version 3 of the License, or</span>
<a name="l00008"></a>00008 <span class="comment">    (at your option) any later version.</span>
<a name="l00009"></a>00009 <span class="comment"></span>
<a name="l00010"></a>00010 <span class="comment">    This program is distributed in the hope that it will be useful,</span>
<a name="l00011"></a>00011 <span class="comment">    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00012"></a>00012 <span class="comment">    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00013"></a>00013 <span class="comment">    GNU General Public License for more details.</span>
<a name="l00014"></a>00014 <span class="comment"></span>
<a name="l00015"></a>00015 <span class="comment">    You should have received a copy of the GNU General Public License</span>
<a name="l00016"></a>00016 <span class="comment">    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<a name="l00017"></a>00017 <span class="comment"> -------------------------------------------------------------------------*/</span>
<a name="l00018"></a>00018 <span class="keyword">package </span>ca.uqac.dim.turtledb;
<a name="l00019"></a>00019 
<a name="l00020"></a>00020 <span class="keyword">import</span> java.util.*;
<a name="l00021"></a>00021 <span class="keyword">import</span> javax.xml.parsers.*;
<a name="l00022"></a>00022 <span class="keyword">import</span> org.w3c.dom.*;
<a name="l00023"></a>00023 
<a name="l00024"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html">00024</a> <span class="comment">/*package*/</span> <span class="keyword">class </span><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html">XmlQueryVisitor</a> <span class="keyword">extends</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_query_visitor.html">QueryVisitor</a>
<a name="l00025"></a>00025 {
<a name="l00026"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">00026</a>   <span class="keyword">protected</span> Document <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>;
<a name="l00027"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">00027</a>   <span class="keyword">protected</span> Stack&lt;Node&gt; <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>;
<a name="l00028"></a>00028 
<a name="l00029"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#ae4f243f835054c721b11df0ef666778e">00029</a>   <span class="keyword">public</span> Document <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#ae4f243f835054c721b11df0ef666778e">getDocument</a>()
<a name="l00030"></a>00030   {
<a name="l00031"></a>00031     Node n = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.pop();
<a name="l00032"></a>00032     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.appendChild(n);
<a name="l00033"></a>00033     <span class="keywordflow">return</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>;
<a name="l00034"></a>00034   }
<a name="l00035"></a>00035 
<a name="l00036"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#aac5e043717a1edac57e4a39669518e80">00036</a>   <span class="keyword">public</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#aac5e043717a1edac57e4a39669518e80">XmlQueryVisitor</a>()
<a name="l00037"></a>00037   {
<a name="l00038"></a>00038     super();
<a name="l00039"></a>00039     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a> = <span class="keyword">new</span> Stack&lt;Node&gt;();
<a name="l00040"></a>00040     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a> = null;
<a name="l00041"></a>00041     DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
<a name="l00042"></a>00042     DocumentBuilder builder = null;
<a name="l00043"></a>00043     <span class="keywordflow">try</span>
<a name="l00044"></a>00044     {
<a name="l00045"></a>00045       builder = builderFactory.newDocumentBuilder();
<a name="l00046"></a>00046       m_doc = builder.newDocument();
<a name="l00047"></a>00047     }
<a name="l00048"></a>00048     <span class="keywordflow">catch</span> (ParserConfigurationException e)
<a name="l00049"></a>00049     {
<a name="l00050"></a>00050       e.printStackTrace();  
<a name="l00051"></a>00051     }
<a name="l00052"></a>00052   }
<a name="l00053"></a>00053 
<a name="l00054"></a>00054   @Override
<a name="l00055"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a748d952632fcd0a4c6258387136f189f">00055</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a748d952632fcd0a4c6258387136f189f">visit</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_intersection.html">Intersection</a> r)
<a name="l00056"></a>00056   {
<a name="l00057"></a>00057     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a9dde9305cf2fb2788a401f0468f03224">visitNAry</a>(<span class="stringliteral">&quot;intersection&quot;</span>, r);
<a name="l00058"></a>00058   }
<a name="l00059"></a>00059 
<a name="l00060"></a>00060   @Override
<a name="l00061"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#adcce4c86470b60c226edda8c11a47bad">00061</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a748d952632fcd0a4c6258387136f189f">visit</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_union.html">Union</a> r)
<a name="l00062"></a>00062   {
<a name="l00063"></a>00063     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a9dde9305cf2fb2788a401f0468f03224">visitNAry</a>(<span class="stringliteral">&quot;union&quot;</span>, r);
<a name="l00064"></a>00064   }
<a name="l00065"></a>00065 
<a name="l00066"></a>00066   @Override
<a name="l00067"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#ab8636495ffba2b0abfc4c8b858cb9829">00067</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a748d952632fcd0a4c6258387136f189f">visit</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_projection.html">Projection</a> r)
<a name="l00068"></a>00068   {
<a name="l00069"></a>00069     Node n = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;projection&quot;</span>);
<a name="l00070"></a>00070     Node schema = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a4fa9e249de7a026e6d9e67ed489880e8">createSchemaNode</a>(r.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_projection.html#ac0b060433dea772e5c6c5965fa3668ad">m_schema</a>);
<a name="l00071"></a>00071     Node relation = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.pop();
<a name="l00072"></a>00072     n.appendChild(schema);
<a name="l00073"></a>00073     n.appendChild(relation);
<a name="l00074"></a>00074     Node op = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;operand&quot;</span>);
<a name="l00075"></a>00075     op.appendChild(n);
<a name="l00076"></a>00076     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.push(op);
<a name="l00077"></a>00077   }
<a name="l00078"></a>00078 
<a name="l00079"></a>00079   @Override
<a name="l00080"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a3f9da3458faff6597f240e3415f5a962">00080</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a748d952632fcd0a4c6258387136f189f">visit</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_selection.html">Selection</a> r)
<a name="l00081"></a>00081   {
<a name="l00082"></a>00082     Node n = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;selection&quot;</span>);
<a name="l00083"></a>00083     Node condition = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a7015e308c1d7f7f4e4280f0d0b9ae61a">createConditionNode</a>(r.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_selection.html#acef83632b85933c9907b92110662ae0a">m_condition</a>);
<a name="l00084"></a>00084     Node relation = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.pop();
<a name="l00085"></a>00085     n.appendChild(condition);
<a name="l00086"></a>00086     n.appendChild(relation);
<a name="l00087"></a>00087     Node op = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;operand&quot;</span>);
<a name="l00088"></a>00088     op.appendChild(n);
<a name="l00089"></a>00089     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.push(op);
<a name="l00090"></a>00090   }
<a name="l00091"></a>00091 
<a name="l00092"></a>00092   @Override
<a name="l00093"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#aab57c513784316b2aad352f0c6bfbffb">00093</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a748d952632fcd0a4c6258387136f189f">visit</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_variable_table.html">VariableTable</a> r)
<a name="l00094"></a>00094   {
<a name="l00095"></a>00095     Node n = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;vartable&quot;</span>);
<a name="l00096"></a>00096     Node name = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;name&quot;</span>);
<a name="l00097"></a>00097     name.setTextContent(r.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_variable_table.html#a3a7352abd5bca8b9904a80b1a1b9bdfc">getName</a>());
<a name="l00098"></a>00098     Node site = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;site&quot;</span>);
<a name="l00099"></a>00099     site.setTextContent(r.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_variable_table.html#a2a3a115140d8bb32a040cd7a3dbcdae0">getSite</a>());
<a name="l00100"></a>00100     n.appendChild(name);
<a name="l00101"></a>00101     n.appendChild(site);
<a name="l00102"></a>00102     <span class="keywordflow">if</span> (r.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_unary_relation.html#a1ae5d140ec09a2db41d6ff8cd7c0f81c">m_relation</a> != null)
<a name="l00103"></a>00103     {
<a name="l00104"></a>00104       Node relation = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.pop();
<a name="l00105"></a>00105       n.appendChild(relation);
<a name="l00106"></a>00106     }
<a name="l00107"></a>00107     Node op = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;operand&quot;</span>);
<a name="l00108"></a>00108     op.appendChild(n);
<a name="l00109"></a>00109     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.push(op);
<a name="l00110"></a>00110   }
<a name="l00111"></a>00111 
<a name="l00112"></a>00112   @Override
<a name="l00113"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a33c46fe3adc52628d2d1c5b9f11d8081">00113</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a748d952632fcd0a4c6258387136f189f">visit</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html">Table</a> r)
<a name="l00114"></a>00114   {
<a name="l00115"></a>00115     Node n = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;table&quot;</span>);
<a name="l00116"></a>00116     Node schema = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a4fa9e249de7a026e6d9e67ed489880e8">createSchemaNode</a>(r.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html#a80c04212069dd7548effe8acbf0a2b9d">m_schema</a>);
<a name="l00117"></a>00117     n.appendChild(schema);
<a name="l00118"></a>00118     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation_stream_iterator.html">RelationStreamIterator</a> it = r.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html#a8616d5a42e073876c16bdb41bd17baa5">streamIterator</a>();
<a name="l00119"></a>00119     it.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation_stream_iterator.html#a7ca9e1cbca7ea5fc258eaf130d753951">reset</a>();
<a name="l00120"></a>00120     <span class="keywordflow">while</span> (it.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation_stream_iterator.html#a0eae9f997c1937b9a1a03a069d609d1e">hasNext</a>())
<a name="l00121"></a>00121     {
<a name="l00122"></a>00122       <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_tuple.html">Tuple</a> t = it.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation_stream_iterator.html#a806cbbcde33d6a2aec6acde7b1c5c77c">next</a>();
<a name="l00123"></a>00123       Node t_node = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#adcd5ccc3374808131880fdbda392d0fd">createTupleNode</a>(t);
<a name="l00124"></a>00124       n.appendChild(t_node);
<a name="l00125"></a>00125     }
<a name="l00126"></a>00126     Node op = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;operand&quot;</span>);
<a name="l00127"></a>00127     op.appendChild(n);
<a name="l00128"></a>00128     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.push(op);
<a name="l00129"></a>00129   }
<a name="l00130"></a>00130   
<a name="l00131"></a>00131   @Override
<a name="l00132"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#ac495fb492178ce31e2d33fe8f8e81ce1">00132</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a748d952632fcd0a4c6258387136f189f">visit</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_join.html">Join</a> r) <span class="keywordflow">throws</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_query_visitor_1_1_visitor_exception.html">VisitorException</a>
<a name="l00133"></a>00133   {
<a name="l00134"></a>00134     Node n = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;join&quot;</span>);
<a name="l00135"></a>00135     Node n_right = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.pop(); <span class="comment">// RHS</span>
<a name="l00136"></a>00136     Node n_left = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.pop(); <span class="comment">// LHS</span>
<a name="l00137"></a>00137     Node condition = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a7015e308c1d7f7f4e4280f0d0b9ae61a">createConditionNode</a>(r.m_condition);
<a name="l00138"></a>00138     n.appendChild(condition);
<a name="l00139"></a>00139     n.appendChild(n_left);
<a name="l00140"></a>00140     n.appendChild(n_right);
<a name="l00141"></a>00141     Node op = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;operand&quot;</span>);
<a name="l00142"></a>00142     op.appendChild(n);
<a name="l00143"></a>00143     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.push(op);
<a name="l00144"></a>00144   }
<a name="l00145"></a>00145 
<a name="l00146"></a>00146   @Override
<a name="l00147"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a26ce3eb7a0184073b77c6f4a5ccdebfb">00147</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a748d952632fcd0a4c6258387136f189f">visit</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_product.html">Product</a> r) <span class="keywordflow">throws</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_query_visitor_1_1_visitor_exception.html">VisitorException</a>
<a name="l00148"></a>00148   {
<a name="l00149"></a>00149     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a9dde9305cf2fb2788a401f0468f03224">visitNAry</a>(<span class="stringliteral">&quot;product&quot;</span>, r);
<a name="l00150"></a>00150   }
<a name="l00151"></a>00151   
<a name="l00152"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a9dde9305cf2fb2788a401f0468f03224">00152</a>   <span class="keyword">protected</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a9dde9305cf2fb2788a401f0468f03224">visitNAry</a>(String <span class="keyword">operator</span>, <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_n_ary_relation.html">NAryRelation</a> r)
<a name="l00153"></a>00153   {
<a name="l00154"></a>00154     Node n = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="keyword">operator</span>);
<a name="l00155"></a>00155     <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; r.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_n_ary_relation.html#aed20a0eb0271434efde6557d9d1064f9">m_relations</a>.size(); i++)
<a name="l00156"></a>00156     {
<a name="l00157"></a>00157       Node n_op = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.pop();
<a name="l00158"></a>00158       n.appendChild(n_op);
<a name="l00159"></a>00159     }
<a name="l00160"></a>00160     Node op = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;operand&quot;</span>);
<a name="l00161"></a>00161     op.appendChild(n);
<a name="l00162"></a>00162     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a5abb569574456d4316128aa5daadc405">m_parts</a>.push(op);
<a name="l00163"></a>00163   }
<a name="l00164"></a>00164 
<a name="l00165"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a4fa9e249de7a026e6d9e67ed489880e8">00165</a>   <span class="keyword">protected</span> Node <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a4fa9e249de7a026e6d9e67ed489880e8">createSchemaNode</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_schema.html">Schema</a> sch)
<a name="l00166"></a>00166   {
<a name="l00167"></a>00167     Node n = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;schema&quot;</span>);
<a name="l00168"></a>00168     <span class="keywordflow">for</span> (<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_attribute.html">Attribute</a> a : sch)
<a name="l00169"></a>00169     {
<a name="l00170"></a>00170       Node attnode = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;attribute&quot;</span>);
<a name="l00171"></a>00171       attnode.setTextContent(a.toString());
<a name="l00172"></a>00172       n.appendChild(attnode);
<a name="l00173"></a>00173     }
<a name="l00174"></a>00174     <span class="keywordflow">return</span> n;
<a name="l00175"></a>00175   }
<a name="l00176"></a>00176 
<a name="l00177"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a7015e308c1d7f7f4e4280f0d0b9ae61a">00177</a>   <span class="keyword">protected</span> Node <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a7015e308c1d7f7f4e4280f0d0b9ae61a">createConditionNode</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_condition.html">Condition</a> c)
<a name="l00178"></a>00178   {
<a name="l00179"></a>00179     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_condition_visitor.html">XmlConditionVisitor</a> xcv = <span class="keyword">new</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_condition_visitor.html">XmlConditionVisitor</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>);
<a name="l00180"></a>00180     c.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_condition.html#a890b42d5602748f5ce6781da67228a88">accept</a>(xcv);
<a name="l00181"></a>00181     <span class="keywordflow">return</span> xcv.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_condition_visitor.html#a5e36556d4c00470ecf25e09fea6195d8">getNode</a>();
<a name="l00182"></a>00182   }
<a name="l00183"></a>00183 
<a name="l00184"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#adcd5ccc3374808131880fdbda392d0fd">00184</a>   <span class="keyword">protected</span> Node <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#adcd5ccc3374808131880fdbda392d0fd">createTupleNode</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_tuple.html">Tuple</a> t)
<a name="l00185"></a>00185   {
<a name="l00186"></a>00186     Node tuple = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(<span class="stringliteral">&quot;tuple&quot;</span>);
<a name="l00187"></a>00187     <span class="keywordflow">for</span> (<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_attribute.html">Attribute</a> a : t.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_tuple.html#a9ed7ea608a6160b7a02c0a134a8272bf">keySet</a>())
<a name="l00188"></a>00188     {
<a name="l00189"></a>00189       String a_name = a.toString();
<a name="l00190"></a>00190       String a_val = t.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_tuple.html#a8d2822b5abbaf7d7e8f9e0ccd5a035db">get</a>(a).<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_value.html#a1f78a614b10f89e7164e0660198fd04b">toString</a>();
<a name="l00191"></a>00191       Node atval = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_xml_query_visitor.html#a911e0a9260e9418be1170107f32e53ce">m_doc</a>.createElement(a_name);
<a name="l00192"></a>00192       atval.setTextContent(a_val);
<a name="l00193"></a>00193       tuple.appendChild(atval);
<a name="l00194"></a>00194     }
<a name="l00195"></a>00195     <span class="keywordflow">return</span> tuple;
<a name="l00196"></a>00196   }
<a name="l00197"></a>00197 }
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